CN105462164B - A kind of low temperature resistant special cable sheath material and preparation method thereof - Google Patents
A kind of low temperature resistant special cable sheath material and preparation method thereof Download PDFInfo
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- CN105462164B CN105462164B CN201511000852.1A CN201511000852A CN105462164B CN 105462164 B CN105462164 B CN 105462164B CN 201511000852 A CN201511000852 A CN 201511000852A CN 105462164 B CN105462164 B CN 105462164B
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- low temperature
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- special cable
- temperature resistant
- sheath material
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- 239000000463 material Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 229920000642 polymer Polymers 0.000 claims abstract description 26
- 239000004814 polyurethane Substances 0.000 claims abstract description 21
- 229920002635 polyurethane Polymers 0.000 claims abstract description 21
- -1 polyethylene Polymers 0.000 claims abstract description 17
- 239000004698 Polyethylene Substances 0.000 claims abstract description 15
- 229920000573 polyethylene Polymers 0.000 claims abstract description 15
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 14
- 239000004642 Polyimide Substances 0.000 claims abstract description 14
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 14
- 229920001721 polyimide Polymers 0.000 claims abstract description 14
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000013078 crystal Substances 0.000 claims abstract description 11
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 10
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 37
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 28
- 239000007822 coupling agent Substances 0.000 claims description 21
- 239000000395 magnesium oxide Substances 0.000 claims description 19
- 239000011256 inorganic filler Substances 0.000 claims description 11
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 4
- 239000003999 initiator Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 239000003054 catalyst Substances 0.000 abstract 1
- 239000012744 reinforcing agent Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 238000001694 spray drying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- ALOUNLDAKADEEB-UHFFFAOYSA-N Dimethyl sebacate Natural products COC(=O)CCCCCCCCC(=O)OC ALOUNLDAKADEEB-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229940014772 dimethyl sebacate Drugs 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/16—Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G83/00—Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
- C08G83/001—Macromolecular compounds containing organic and inorganic sequences, e.g. organic polymers grafted onto silica
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/36—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes condensation products of phenols with aldehydes or ketones
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Insulated Conductors (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
Abstract
A kind of low temperature resistant special cable sheath material and preparation method thereof.It is compound as basis material using polyether-ether-ketone, polyethylene and polyimides, and it is modified to introduce super branched polyurethane modified ground polymers progress resistance to low temperature, using cumyl peroxide as crosslinking catalyst, using silicon nitride crystal whisker as reinforcing agent, composite material is formed by melt blending, on the basis of the sheath material ensure that original mechanical strength does not reduce, improves the durability and reliability of special cable, especially special cable and improve cold-resistant resistance to low temperature.
Description
Technical field
The invention belongs to special cable sheath material fields, and in particular to a kind of low temperature resistant special cable sheath material and its
Preparation method.
Background technique
In the case where use condition is special, application environment is complicated, demand day of special cable is aobvious to be protruded, to cable can
By property, durability, more stringent requirements are proposed.Common special cable has: fireproof cable, heating cable, environment-friendly cable etc..
In the prior art, it according to the demand of special cable, often prepares to form suitable demand using new construction, new material, new process
Special cable.Wherein, as a kind of special cable, the demand of low temperature resistant special cable increasingly increases.The heatproof of normal cable
Grade has focused largely on -40 DEG C, and temperature is minimum is not less than 0 DEG C for laying.The severe cold condition of long-term work is obviously not suitable for.
In the prior art, material is concentrated mainly on to improve the improvement of low temperature resistant, the resistance to ultralow temperature performance of special cable
In improvement.For example, CN201510260462.1 provides low temperature resistant one kind, oil resistant, flame-proof soft vinyl CABLE MATERIALS and preparation
Method, by adding acrylate terpolymers modifying agent, polyesters plasticizer, dimethyl sebacate compound in polyvinyl chloride
To improve oil resistant (ASTM2 oil) performance and resistance to low temperature of soft pvc.CN201410284632.5 provides a kind of cold-resistant poly-
Vinyl chloride CABLE MATERIALS and preparation method thereof is modified SG-3 type polyvinyl chloride resin, improves its cold resistant property.As it can be seen that material
The modification of material has important effect in the improvement for improving special cable cold resistant property.However, being protected during material modification
The basic performance of card special cable is improved particularly cold-resistant resistance to low temperature under study for action by many resistances in the case where not reducing
And limitation.
For this technical difficulty, need to improve cold tolerance under the premise of a kind of guarantee special cable basic performance is constant
Process.
Summary of the invention
Present invention seek to address that but be not limited to following technical problem: improve the low temperature resistant of low temperature resistant special cable sheath material
Property guarantees original mechanical strength, improves the durability and reliability of special cable, and especially special cable raising cold-resistant is resistance to low
Warm nature energy.
Present invention firstly provides a kind of preparation methods of low temperature resistant special cable sheath material, comprising the following steps:
S1. the preparation of super branched polyurethane modified ground polymers:
In mass ratio by ground polymers powder, silane coupling agent, super branched polyurethane monomer, initiator: 100:(0.5 ~ 1.5)
: (5 ~ 10): (0.01 ~ 0.03) melting mixing about 30 ~ 100min at 95 ~ 100 DEG C forms super branched polyurethane and gathers modifiedly
Object；
S2. inorganic filler is modified
Silicon nitride crystal whisker, molybdenum trioxide, magnesia, modified coupling agent are mixed to form mixture in proportion, gained is mixed
It closes after object is mixed with isopropanol 1:2 in mass ratio and carries out 10 ~ 50min of ultrasonic treatment, it is modified through suction filtration, washing, dry acquisition
Inorganic filler；
S3. the preparation of low temperature resistant special cable sheath material:
By polyether-ether-ketone, polyethylene, polyimides, super branched polyurethane modified ground polymers, cumyl peroxide, modification
Inorganic filler afterwards is uniformly mixed in a high speed mixer in proportion, is squeezed out through double screw extruder melt blending, through pelleter
It is granulated and obtains low temperature resistant special cable sheath material.
As basic polymer material, to improve low temperature resistant, shock resistance, the present invention uses high performance engineering poly-
Ether ether ketone, polyethylene and polyimides carry out compound in proportion and carry out corresponding modification and can significantly promote it as resistance to low
The performance of warm special cable sheath material.Ratio by mass part of each raw material in step S3 are as follows:
Polyether-ether-ketone 35-40
Polyethylene 15-30
Polyimides 25-30
Super branched polyurethane modified ground polymers 5-9
Cumyl peroxide 0.3-0.8.
Particularly, it is added using super branched polyurethane modified ground polymers as additive, effectively raises the anti-of material
Cold resistance to low temperature.It should be pointed out that ground polymers, that is, geo-polymer, two kinds of expression are conventional table in the art
It reaches, has no other particular meanings, with the title studied and approved extensively for this field.Preferably, polymers powder in ground is by following step
Rapid preparation: configuration raw mixture in mass ratio, metakaolin: sodium hydroxide: waterglass: water=100: (10 ~ 20):
(100 ~ 120): (500 ~ 2000)；Raw mixture is kept the temperature 1 ~ 3 hour at 50 ~ 70 DEG C, spray drying forms ground polymers powder
Body.In addition, cumyl peroxide is introduced, it is especially effective to the crosslinking of polyethylene as initiator, therefore, above-mentioned material
It is not simple physical mixed in mixed process, but with considerable degree of chemical crosslinking process, and the cross-linking process is simultaneously
The crosslinking being not limited between Polyethylene Chain, and should widely be interpreted as any reaction that may occur in above-mentioned raw materials.
For the flame retardant property and mechanical performance for guaranteeing material, the ratio of each inorganic filler and modified coupling agent is pressed in step S2
Parts by weight are as follows:
Silicon nitride crystal whisker 2-5
Molybdenum trioxide 0.5-2.5
Magnesia 1-20
Modified coupling agent 0.1-1.5.
Optionally, the molybdenum trioxide average grain diameter used is 30-200nm, and molybdenum trioxide is the case where material once burns
Under, there is effective inhibiting effect to the formation of flue gas, and its partial size is adjusted, not only it is related to its inhibition to flue gas
Effect, meanwhile, inventor is, it was also found that also have an impact to material mechanical performance after molding.
Magnesia has been widely applied in low temperature resistant special cable sheath material as fire resistant infilling, however, using
The mode of gradient partial size filler improves magnesium oxide particle distribution in the composite and influence to the mechanical property of matrix but
It not disclosed in the prior art or enlightens, inventor's discovery is suitably matched using the magnesia of two kinds of particle diameter distributions, right
The mechanical quality of basis material increases, while fire resistance can't be influenced, it is preferable that using the oxygen matched as follows
Change magnesium as filler:
50nm≤20 ~ 40wt% of average grain diameter≤300nm magnesia
300nm < average grain diameter≤1000nm 60 ~ 80wt% of magnesia.
To improve the compatibility of inorganic filler in a polymer matrix, using coupling agent as increase-volume auxiliary agent, coupling agent is excellent
It is selected as the mixture of silane coupling agent and titanate coupling agent, in mass ratio, silane coupling agent: titanate coupling agent=1 ~ 5:1.
To improve into material uniformity, melt blending extrusion temperature is 190 ~ 260 DEG C, and screw speed is 150 ~ 200rpm.
Finally, the present invention provides a kind of low temperature resistant special cable sheath materials prepared using the above method.
The beneficial effect of the present invention compared with the prior art is: low temperature resistant special cable sheath material provided by the invention
Using high performance engineering polyether-ether-ketone, polyethylene and composite polyimide material, and carrying out corresponding modification can be big
Amplitude promotes its performance as low temperature resistant special cable sheath material.Through detecting, low temperature resistant special cable provided by the invention
Sheath material ultimate tensile strength reaches 21.2Mpa, and elongation at break maximum is more than 500%, after aging process, tensile strength variation
Rate is average -12.7% or so, and the elongation at break average rate of change is about 15.97%, and smoke density is respectively less than 30Dm, and oxygen index (OI) is big
In 30, can not crack in -50 DEG C of cold bend(ing)s.From These parameters it is found that above-mentioned material has preferable low temperature resistant property, improvement
Flame retardant effect, the stability that can be realized under bad working environments do not reduce.
Specific embodiment
To keep technical solution of the present invention and its technical effect clearer, clear, following example and comparative example are to this
Invention specific embodiment is further described.It should be appreciated that following specific embodiments be only technical solution of the present invention compared with
Good embodiment, is not intended to limit the present invention.
(1) preparation of related raw material:
The preparation of super branched polyurethane modified ground polymers:
(1) raw mixture, metakaolin: sodium hydroxide: waterglass: water=100: 10: 110 are configured in mass ratio
: 1500；Raw mixture is kept the temperature 1 hour at 60 DEG C, spray drying forms ground polymers powder；
(2) in mass ratio by ground polymers powder, silane coupling agent, super branched polyurethane monomer, initiator: 100: 0.5
: 8:0.01 melting mixing 50min at 95 DEG C forms super branched polyurethane modified ground polymers, as used in following embodiment
Raw material.
(2) preparation of low temperature resistant special cable sheath material:
Embodiment 1-1
(1) modification of inorganic filler
Ratio by mass part of each inorganic filler and modified coupling agent are as follows:
Silicon nitride crystal whisker 5
Molybdenum trioxide 2.5
Magnesia 10
Modified coupling agent 1.2
Wherein, molybdenum trioxide average grain diameter selects 100nm, and magnesia selects the oxidation that the average grain diameter of 20wt% is 150nm
Mixture of the average grain diameter of magnesium and 80wt% for the magnesia of 500nm, coupling agent selection silane coupling agent: titanate coupling agent=
2:1。
Silicon nitride crystal whisker, molybdenum trioxide, magnesia, modified coupling agent are mixed to form mixture in proportion, gained is mixed
It closes after object is mixed with isopropanol 1:2 in mass ratio and carries out ultrasonic treatment 40min, through suction filtration, washing, the dry modified nothing of acquisition
Machine filler.
(2) preparation of low temperature resistant special cable sheath material:
Ratio by mass part of each raw material are as follows:
Polyether-ether-ketone 40
Polyethylene 20
Polyimides 25
Super branched polyurethane modified ground polymers 9
Cumyl peroxide 0.6.
By polyether-ether-ketone, polyethylene, polyimides, super branched polyurethane modified ground polymers, cumyl peroxide, modification
Inorganic filler afterwards is uniformly mixed in a high speed mixer in proportion, is squeezed out through double screw extruder melt blending, melt blending
Extrusion temperature is 260 DEG C, screw speed 200rpm, is granulated through pelleter and obtains low temperature resistant special cable sheath material, is denoted as
Sample 1-1.
Embodiment 1-2
Compared to embodiment 1-1, only the proportion of inorganic filler in step (1) and modified coupling agent is adjusted as follows:
Silicon nitride crystal whisker 2.5
Molybdenum trioxide 2
Magnesia 15
Modified coupling agent 1.2
Wherein, molybdenum trioxide average grain diameter selects 150nm, and magnesia selects the oxidation that the average grain diameter of 40wt% is 250nm
Mixture of the average grain diameter of magnesium and 60wt% for the magnesia of 800nm, coupling agent selection silane coupling agent: titanate coupling agent=
2:1。
Low temperature resistant special cable sheath material is prepared, sample 1-2 is denoted as.
Embodiment 1-3
Compared to embodiment 1-1, only the proportion of each raw material in step (2) is adjusted as follows:
Polyether-ether-ketone 35
Polyethylene 30
Polyimides 30
Super branched polyurethane modified ground polymers 5
Cumyl peroxide 0.8.
Low temperature resistant special cable sheath material is prepared, sample 1-3 is denoted as.
Comparative example 1-1
Compared to embodiment 1-1, only the proportion of each raw material in step (2) is adjusted as follows:
Polyether-ether-ketone 40
Polyethylene 20
Polyimides 25
Cumyl peroxide 0.6.
Low temperature resistant special cable sheath material is prepared, sample 1-4 is denoted as.
(3) properties of sample is tested
According to the related request of GB/T2951.11-2008, the relevant test method of flame retardant cable smoke density, -40 DEG C of clod washes
Bent experimental method carries out dependence test to sample 1-1 to sample 1-4, and test result is shown in Table 1.
1. properties of sample test result data table of table
Claims (5)
1. a kind of preparation method of low temperature resistant special cable sheath material, which comprises the following steps:
S1. the preparation of super branched polyurethane modified ground polymers
In mass ratio by ground polymers powder, silane coupling agent, super branched polyurethane monomer, initiator: 100: (0.5 ~ 1.5):
(5 ~ 10): (0.01 ~ 0.03) 30 ~ 100min of melting mixing at 95 ~ 100 DEG C forms super branched polyurethane modified ground polymers；
S2. inorganic filler is modified
Silicon nitride crystal whisker, molybdenum trioxide, magnesia, modified coupling agent are mixed to form mixture in proportion, by gained mixture
10 ~ 50min of ultrasonic treatment is carried out after mixing with isopropanol 1:2 in mass ratio, through suction filtration, washing, the dry modified nothing of acquisition
Machine filler；
Wherein ratio by mass part of silicon nitride crystal whisker, molybdenum trioxide, magnesia, modified coupling agent are as follows:
Silicon nitride crystal whisker 2-5
Molybdenum trioxide 0.5-2.5
Magnesia 1-20
Modified coupling agent 0.1-1.5；
S3. the preparation of low temperature resistant special cable sheath material
By polyether-ether-ketone, polyethylene, polyimides, the modified ground polymers of super branched polyurethane, cumyl peroxide, modified
Inorganic filler is uniformly mixed in a high speed mixer in proportion, is squeezed out through double screw extruder melt blending, is granulated through pelleter
Obtain low temperature resistant special cable sheath material；
The wherein ratio of polyether-ether-ketone, polyethylene, polyimides, super branched polyurethane modified ground polymers, cumyl peroxide
By weight are as follows:
Polyether-ether-ketone 35-40
Polyethylene 15-30
Polyimides 25-30
Super branched polyurethane modified ground polymers 5-9
Cumyl peroxide 0.3-0.8.
2. the preparation method of low temperature resistant special cable sheath material according to claim 1, it is characterised in that:
Ratio by mass part of silicon nitride crystal whisker, molybdenum trioxide, magnesia, modified coupling agent are as follows:
Silicon nitride crystal whisker 5
Molybdenum trioxide 2.5
Magnesia 10
Modified coupling agent 1.2.
3. the preparation method of low temperature resistant special cable sheath material according to claim 2, it is characterised in that:
Polyether-ether-ketone, polyethylene, polyimides, super branched polyurethane are modified the ratio of ground polymers, cumyl peroxide by weight
Measure part are as follows:
Polyether-ether-ketone 40
Polyethylene 20
Polyimides 25
Super branched polyurethane modified ground polymers 9
Cumyl peroxide 0.6.
4. the low temperature resistant special cable sheath material of method preparation according to claim 1-3.
5. low temperature resistant special cable sheath material according to claim 4, it is characterised in that: low temperature resistant special cable sheath
Material ultimate tensile strength reaches 21.2MPa, and elongation at break maximum is more than 500%.
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| UA125518C2 (en) * | 2016-07-20 | 2022-04-13 | Сінтос С.А. | Process for the production of geopolymer or geopolymer composite |
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| CN108117748A (en) * | 2016-11-29 | 2018-06-05 | 江苏河阳电气有限公司 | A kind of charging system for electric automobile high-low temperature resistant CABLE MATERIALS and preparation method thereof |
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